<template>
	<div>
		<el-dialog :title="upload.title" :visible.sync="upload.open" width="400px" append-to-body>
			<el-upload ref="upload" :limit="1" accept=".xlsx, .xls" :headers="upload.headers"
				:action="upLoadFileUrl + '?updateSupport=' + upload.updateSupport" :disabled="upload.isUploading"
				:on-change="handleChange"
				:on-progress="handleFileUploadProgress" :on-success="handleFileSuccess" :auto-upload="false" drag>
				<i class="el-icon-upload"></i>
				<div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
				<div class="el-upload__tip text-center" slot="tip">
					<div class="el-upload__tip" slot="tip">
						<el-checkbox v-model="upload.updateSupport" /> 是否更新已经存在的用户数据
					</div>
					<span>仅允许导入xls、xlsx格式文件。</span>
					<el-link type="primary" :underline="false" style="font-size:12px;vertical-align: baseline;"
						@click="importTemplate">下载模板</el-link>
				</div>
			</el-upload>
			<div slot="footer" class="dialog-footer">
				<el-button type="primary" @click="submitFileForm">确 定</el-button>
				<el-button @click="upload.open = false">取 消</el-button>
			</div>
		</el-dialog>
	</div>
</template>

<script>
	import {
		getToken
	} from "@/utils/auth";
	import {
		fileDown
	} from '@/utils';
	export default {
		props: {
			url: {
				type: String,
				default: () => ""
			},
			templateUrl: {
				type: String,
				default: () => ""
			},
			toFileDownLocal: {
				type: Boolean,
				default: () => false
			},
			toFileDown: {
				type: Boolean,
				default: () => false
			}
		},
		data() {
			return {
				upload: {
					// 是否显示弹出层（用户导入）
					open: false,
					// 弹出层标题（用户导入）
					title: "",
					// 是否禁用上传
					isUploading: false,
					// 是否更新已经存在的用户数据
					updateSupport: 0,
					// 设置上传的请求头部
					headers: {
						Authorization: "Bearer " + getToken()
					},
				},
				fileRaw: null,
			}
		},
		methods: {
			init({
				title
			}) {
				this.upload.open = true;
				this.upload.title = title;
			},
			/** 下载模板操作 */
			importTemplate() {
				if (this.toFileDownLocal) {
					this.localDown();
				} else if (this.toFileDown) {
					fileDown(this.templateUrl);
				} else {
					this.download(this.templateUrl, {}, `${this.upload.title}模板_${new Date().getTime()}.xlsx`);
				}
			},
			handleChange({raw}){
				if(this.toFileDownLocal){
					this.fileRaw = raw;
				}
			},
			submitFileForm() { // 确定
				if(this.toFileDownLocal){
					if(this.fileRaw){
						this.$emit("success",this.fileRaw);
						this.fileRaw = null;
						this.$refs['upload'].clearFiles();
						this.upload.open = false;
					}else{
						this.$message.error("请上传文件");
					}
				}else{
					this.$refs.upload.submit();
				}
			},
			localDown() {
				const a = document.createElement('a'); //创建a标签
				a.setAttribute('download', `${Date.now()}.xls`); // 名字
				a.setAttribute('href', "/template/people.xls"); // href链接
				a.click(); // 自执行点击事件
				document.body.appendChild(a); //插入body里
				document.body.removeChild(a); //从body删除
			},
			// 文件上传中处理
			handleFileUploadProgress(event, file, fileList) {
				this.upload.isUploading = true;
			},
			// 文件上传成功处理
			handleFileSuccess(response, file, fileList) {
				this.upload.open = false;
				this.upload.isUploading = false;
				this.$refs.upload.clearFiles();
				this.upload.open = false;
				this.$alert("<div style='overflow: auto;overflow-x: hidden;max-height: 70vh;padding: 10px 20px 0;'>" +
					response.msg + "</div>", "导入结果", {
						dangerouslyUseHTMLString: true
					});
				if (response.code == 200) this.$emit("success");
			},
		},
		computed: {
			upLoadFileUrl() {
				return process.env.VUE_APP_BASE_API + this.url
			}
		}
	}
</script>

<style>
</style>
